Ferns contains all of the structures listed except a) roots b) seeds c) leaves d) vascular tissue

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

thats not a question

the answer is c.

by: nicholas dooley